baber/WOPTO huggingface dataset:
Patent CA-2056132-A1 (CA)
Title: Telephone ringer circuit
Inventor: BARSON MICHAEL
IPC: H03K17/687
Filed: 1991-11-26
Abstract: ABSTRACT TELEPHONE RINGER CIRCUIT    A ringer for a telephone system comprising a transformer having a first feedback loop controlling in use the primary current of the transformer in response to the ringer output and a second feedback loop controlling in use the secondary current of the transformer in response to the ringer output.
Patent CA-2057934-A1 (CA)
Inventor: GOELA JITENDRA S
IPC: C04B41/50
Filed: 1991-12-18
Abstract: A process is disclosed for fabricating lightweight honeycomb type structures out of material such as silicon carbide (SiC) and silicon (S).  The lightweight structure consists of a core to define the shape and size of the structure.  The core is coated with an appropriate deposit such as  SiC or Si  to give  the  lightweight  structure strength and stiffness and for bonding the lightweight structure to another surface.  The core is fabricated from extremely thin ribs of appropriately stiff and strong material  such  as  graphite.    First, a  graphite  core consisting of  an outer hexagonal  cell with six inner triangular cells is constructed from the graphite ribs. The graphite core may be placed on the back-up side of a SiC  faceplate  and then coated with SiC to produce  a monolithic structure without the use of any bonding agent. Cores and methods for the fabrication thereof in which the six inner triangular cells are further divided into a plurality of cells are also disclosed.
Patent CA-2061576-A1 (CA)
Title: Differential actuating system for downhole tools
Inventor: SCHULTZ ROGER L
IPC: E21B23/04
Filed: 1992-02-20
Abstract: Abstract Of The Disclosure A differential pressure actuating system for downhole tools provides endless operation by the use of the differen-tial pressure between two isolated zones of a well as a power source for the tool.  That differential pressure is applied across a power transfer element to operate the downhole tool.
Patent CA-2062459-A1 (CA)
Title: Ink ribbon cassette
Inventor: ANDO YOICHI
IPC: B41J35/08
Filed: 1992-03-06
Abstract: ABSTRACT        An ink ribbon cassette is protrusively provided with a freely attachable and detachable rotating knob 2 on the outside of the ink ribbon cassette case 3 to tighten an ink ribbon 1 when it is slackened.
Patent CA-2063164-A1 (CA)
Inventor: KRYWITSKY LEO L
IPC: F16B39/02
Filed: 1992-03-17
Abstract: Most mechanical joints, both sealed and not sealed use either threaded fasteners such as conventional nuts, bolts and set screws or non-threaded fasteners such as conventional spring pins. Safety, economy, reliability and environmentability of structures, piping systems, both portable and fixed, their combination, mechanical equipment, power plants, jet liners, ships, etc., rely on the predictable performance of involved fasteners.      Due to the variety of factors, a predictable performance of corresponding commercial fasteners is not always fully attainable.      Such uncontrollable conditions as in-service thermal cycling, vibration, metal flattening, metal fatigue, human error, possible malpractice, tampering with or neglect, occuring during installation, operation or maintenance, make performance prediction difficult and increase associated costs.      This invention comprises a number of value-added improvements of commercial fasteners which may significantly increase the accuracy of prediction in safety, economy, reliability and environmentability of involved systems if proposed improved fasteners are used.      Related, authenticated tests carried out earlier have proved that the claimed herein self-locking and self-tightening features are indeed attainable. Proposed related manufacturing processes and operation plans involving a combination of automated CNC high technology (Lasers) and CNC low technology (mechanical equipment, dies, tools, fixtures, etc.) may result in these high quality products produced at relatively reasonable cost.
Patent CA-2064653-A1 (CA)
Inventor: SHIBUTA NOBUHIRO
IPC: H01F6/06
Filed: 1992-04-01
Abstract: A high temperature superconducting coil includes an oxide superconducting wire 2 wound in a coil, a container 3 for accommodating the superconducting wire 2, and a filling resin portion 4 for fixing the superconducting wire 2 in the container 3 by being injected into the container 3 and then cured.
Patent CA-2066727-A1 (CA)
Title: Control device for hydraulic working cylinders of a loading board wall of a vehicle
Inventor: WEBER GUENTER
IPC: B60P1/16
Filed: 1990-09-10
Abstract: Control Device for Hydraulic Operating Cylinders of a Combined Lifting Platform and Closing Wall of a Vehicle Abstract:        A control device for hydraulic operating cylinders of a combined lifting platform and closing wall of a vehicle, having a hydraulic fluid pump (1), driven by a motor (2), which pump can be made to communicate with a fluid supply (4) and, via pump branch lines (8', 8") beginning at a pump line (8), with a chamber of at least one lifting cylinder (11) and of at least one closing cylinder (14) of the lifting platform and closing wall, respectively, via associated control valves (9, 10; 12, 13), wherein a pressure transformer and piston cylinder unit (15) is connected parallel to the pump branch lines (8', 8"), and wherein an electrical switch (16), with which the pump motor (2) can be shut down if a predetermined pressure is exceeded, or an adjustable hydraulic valve, by way of which the pump branch lines (8', 8") can be blocked off or the pump line (8) can be made to communicate with a return line (7) to the fluid supply (4), and with which the pump motor (2) can optionally be shut down, is connected to the chamber, communicating with the closing cylinder(s) (14), of the smaller end of the piston of the pressure transformer and piston-cylinder unit (15).      Fig. 1
Patent CA-2067222-A1 (CA)
Title: Fluid handling method and system and fluid interface apparatus usable therewith
Inventor: BEUCHAT CHARLES E
IPC: A61M1/00
Filed: 1990-10-26
Abstract: A fluid handling system (10) is disclosed for use with a surgical handpiece (12) in microsurgery. Included is a fluid interface block apparatus (22) which is structurally adapted to be removably and firmly secured to a control unit (14) of the type which controls the fluidics of a microsurgery system. The system includes a plurality of peristaltic pumps (16) arranged with respect to each other so as to minimize the effects of fluid pressure pulsations produced by each one.
Patent CA-2069217-A1 (CA)
Title: Fine cellulose powder and method of producing the same
Inventor: TAKENISHI SOICHIRO
IPC: C08B16/00
Filed: 1992-05-22
Abstract: ABSTRACT OF THE DISCLOSURE            A fine cellulose powder consists of rounded particles, has a viscosity average polymerization degree of 20 - 150, and exhibits a water absorption coefficient of 100 % or more relative to its own weight. A method of producing the fine cellulose powder comprises the steps of aging alkali cellulose to reduce its average polymerization degree and increase its friability, neutralizing the aged alkali cellulose, and pulverizing the result, preferably in a jet mill.
Patent CA-2070898-A1 (CA)
Title: Stabilized, metal-ion activated l-arginase(l-arginine amidino hydrolase;e.c.3.5.3.1)
Inventor: BOMMARIUS ANDREAS
IPC: C12N9/96
Filed: 1992-06-10
Abstract: ABSTRACT       Stabilized, metal ion activated L-arginase (L-arginine amidinohydrolase; E.C. 3.5.3.1.) is disclosed. Arginase formulations, e.g., for the production of L-ornithine from L-arginine, have the disadvantage that only a small fraction of the enzyme can be recovered after a successful reaction and this, together with the high enzyme costs, renders industrial production of L-ornithine in this way uneconomical.  Using the present invention an enzyme stabilized arginase formulation can be made available, so that L-ornithine can be produced with significantly smaller enzyme consumption figures. The stabilization of the arginase formulation is achieved by the addition of a reducing agent, which, it is intended, should be present at at least a 10-fold molar quantity relative to the arginase. The enzymatic reduction of L-ornithine from L-arginine and arginase kits for this purpose.
Patent CA-2072118-A1 (CA)
Title: Dual flow turbine engine muffler
Inventor: ROSS DAVID F
IPC: F01N1/02
Filed: 1990-11-15
Abstract: An elongate exhaust gas muffler (10) for a turbine engine includes a foraminous central exhaust duct (12) which is circumscribed along its length by a plurality of tuned dissipative and reactive noise attenuation chambers (42-48). At an inlet end (16) of the muffler (10) an annular secondary flow inlet (32) is defined about the central exhaust duct and opens to the first sound attenuation chamber (42). A secondary flow of pressurized bleed air is receivable into the first attenuation chamber (42) in the muffler (10).
Patent CA-2072964-A1 (CA)
Title: Magnetic visual display
Inventor: GILANO MICHAEL A
IPC: B43L1/00
Filed: 1990-10-17
Abstract: An apparatus and method for providing a magnetic display in which a magnetic field (17) produce visual patterns upon exposure to the apparatus. The apparatus comprises an enclosure (50) which contains magnetically active flakes (16) held within a dispersion medium (14) which holds the magnetically active flakes in suspension, yet allows alignment of the flakes along the flux lines (18) of the magnetic field when the flakes are exposed to the locus of the magnetic field.
Patent CA-2072977-A1 (CA)
Title: Site-specific modification of the candida tropicalis genome
Inventor: PICATAGGIO STEPHEN
IPC: C12N15/81
Filed: 1990-11-06
Abstract: The POX genes of C. tropicalis are disrupted resulting in the complete blockage of the beta-oxidation pathway in the strain.  Fermentation of C. tropicalis cells having disrupted genes on alkane, fatty acid and fatty acid ester substrates produces substantially pure dicarboxylic acids in substantially quantitative yield.
Patent CA-2074890-A1 (CA)
Inventor: TESTART GERARD
IPC: E01B25/28
Filed: 1992-07-29
Abstract: L'appareil de voie pour "métro" à véhicules sur pneus est constitué, entre autres, d'un sous-ensemble de guidage (10) en rails ferroviaires à champignon (111), âme (112) et patin (113) avec un contre-aiguille (11) et une aiguille (12) et d'un sous-ensemble de portage (20) en poutres profilées laminées en I à ailes (211), âme (212) et semelles (213) avec deux poutres (21, 22) côte-à-côte. Cet appareil est remarquable en ce qu'il comprend une plaque d'assise (30) destinée à reposer sur une traverse, en ce que le sous-ensemble de guidage (10) est monté directement sur cette plaque d'assise (30) de manière que le contre-aiguille (11) y soit fixé et que l'aiguille (12) puisse s'y déplacer, en ce que le sous-ensemble de portage (12) est monté sur cette plaque d'assise (30) par l'entremise d'une cale (40) de manière que les poutres (21, 22) y soient fixées, leurs ailes (211) au niveau du champignon (111) du contre-aiguille (11), et en ce qu'au moins les âmes (212) des poutres (21,22) sont reliées par des tirants (50) approximativement parallèles à la plaque d'assise (30).
Patent CA-2076769-A1 (CA)
Inventor: LAITRE NORMAND
IPC: B66F3/24
Filed: 1992-08-25
Abstract: ABSTRACT     A hydraulic jack system used for rerailing rail vehicles and for also lifting and lowering heavy loads comprises a base pivotable with respect to the horizontal, giving the hydraulic jack vertical and lateral lift motion. This is particularly advantageous when rerailing rail vehicles as both of these motions are necessary. The hydraulic jack of this invention also has the advantage of being small, portable and easy to assemble.
Patent CA-2078458-A1 (CA)
Title: Separation of active catalyst particles from spent catalyst particles by air elutriation
Inventor: SHERWOOD DAVID E JR
IPC: B07B4/08
Filed: 1992-09-17
Abstract: SEPARATION OF ACTIVE CATALYST PARTICLES FROM        SPENT CATALYST PARTICLES BY AIR ELUTRIATION                    (D#79,464-F) ABSTRACT OF THE DISCLOSURE    Spent hydrotreating catalyst having carbonaceous and metallic deposits and of regular geometric shape after being stripped of process oil is fluidized by flowing air upwardly through the catalyst at a velocity sufficient to expand the bed thereby segregating the catalyst particles into a high activity, upper, less-contaminated fraction and a lower, more-contaminated fraction and recycling the high activity fraction to a hydrotreating process.  Optionally, the high activity fraction can be regenerated with carbon burnoff or rejuvenated by acid leaching followed by regeneration with carbon burnoff to further improve catalyst activity.
Patent CA-2079939-A1 (CA)
Inventor: GEIBEL JON F
IPC: C08G75/02
Filed: 1992-10-06
Abstract: n présente une méthode pour augmenter les concentrations de réactif pour la polymérisation du PPS sans détérioration du poids moléculaire du polymère qui en résulte en limitant la quantité d'eau présente comme sous-produit au cours de la portion initiale de la réaction de polymérisation.
Patent CA-2081387-A1 (CA)
Title: Variable stage pressure diffuser
Inventor: PHILLIPS JOSEPH R
IPC: D21D5/02
Filed: 1992-10-28
Abstract: ABSTRACT      Located within the annular screen of the pressure diffuser is a tubular baffle hung from adjacent the top of the vessel.  The baffle has two headers disposed on its inner surface, with openings in the tube providing communication between the exterior of the tube and the headers.  A conduit extends from each header to an arm at the top of the vessel, to allow extracted liquid to be discharged. Another extraction conduit is provided at the bottom of the vessel, in communication with the screen interior and the tubular baffle interior.  Treatment liquid, such as wash liquid, may be introduced at two, three, or more positions along the vessel with the liquid extracted from the first and second headers being introduceable at different positions along the vessel.  A flexible, elastomeric material, sealing element with integral annular skirt may extend from the bottom end of the tubular baffle and engage the screen to provide a seal minimizing mixing between stages.
Patent CA-2083605-A1 (CA)
Inventor: BRAENDSTROEM ARNE E
IPC: C07D235/28
Filed: 1991-06-05
Abstract: La présente invention porte sur une méthode améliorée pour la synthèse de l'oméprazole, consistant à faire réagir le 5-méthoxy-2-¢(4-méthoxy-3,5-diméthyl-2-pyridinyl)méthylthio!-1H-benzimidazole avec l'acide m-chloroperoxybenzoïque dans une solution de chlorure de méthylène, à un pH pratiquement constant d'environ 8,0 à 8,6; à soumettre le mélange réactionnel à une extraction avec NaOH aqueux; à séparer la phase aqueuse de la phase organique; enfin, à ajouter un formiate d'alkyle à la phase aqueuse, entraînant la cristallisation de l'oméprazole (voir fig. I).
Patent CA-2086633-A1 (CA)
Title: System for bottom feeding and discharging imbricated material to/from an intermediate stack
Inventor: LEU WILLY
IPC: B41F21/00
Filed: 1993-01-04
Abstract: By a first conveying device printing products are fed in an imbricated formation (S), in which each printing product rests on the following one, the fold edge of the folded products forming the trailing edge. The printing products are pushed into an intermediate stack from below. The respectively uppermost product of this intermediate stack is seized in the region of the fold edge by at least one sucker of a sucker arrangement, raised upward and brought into the conveying region (F) of a second conveying device. The latter has individually controllable grippers which are arranged at regular intervals, circulate along a closed path, seize the fold edges delivered by the sucker arrangement and convey away the printing products thus seized. By forming an intermediate stack, from which the printing products are then raised by the sucker arrangement at the desired rate and fed to the grippers, even imbricated formations (S) occurring with irregularities can be processed satisfactorily.
Patent CA-2087400-A1 (CA)
Inventor: BIEN PAUL R
IPC: F16H57/02
Filed: 1993-01-15
Abstract: A gear case comprises three parts: upper and lower sections of heavy duty castings or fabricated steel, the lower section having an open bottom, and a light gauge sheet metal pan enclosing the bottom of the lower section. Alternatively, the upper and lower sections comprise a one piece rigid housing open at the bottom.  The pan is wider than the upper and lower sections to afford extra lubricant capacity.  A molded baffle resides in the pan to separate active from reserve volumes of lubricant.  The heavy duty sections have machined openings to receive seals and afford dimensional stability.  The sheet metal pan is collapsible to take the consequences of impact in case of minor derailment and is easily repaired or replaced.
Patent CA-2095691-A1 (CA)
Title: Interactive electronic game book
Inventor: MORRIS MICHAEL J
IPC: A63F3/04
Filed: 1993-05-06
Abstract: An interactive electronic game book is disclosed in which the pages of the book form game boards for educational or amusement-type games. An electronic randomizer unit is affixed to the back cover of the game book for providing randomly-selected instructions directing the games and allowing the player to interact with the game board pages. The randomizer unit may sequentially operate and randomly select one of a plurality of lights, which correspond to one of a set of game instructions provided on a page adjacent to the randomizer. Several different types of game boards may be contained within a single volume.
Patent CA-2097010-A1 (CA)
Title: Vinyl polymers produced by a two-stage procedure and their use as surface coating binders
Inventor: PORSCH BETTINA
IPC: C08F265/06
Filed: 1993-05-26
Abstract: Abstract of the Disclosure: A vinyl polymer is obtain-able by polymerizing vinyl monomers  in at least two stages by a procedure in which, in a first stage, from 5 to 95% by weight of vinyl monomers are polymerized in an organic solvent or in the absence of a solvent and, in the second stage, from 5 to 95% by weight of the vinyl monomers are polymerized in the presence of the vinyl polymer obtained in the first stage,  likewise in an organic solvent or in the absence of a solvent, with the proviso that the polymerization in the second stage is carried out under conditions under which an average molecular weight Mn, which is at least 1,000 higher com-pared with that of the vinyl polymer, the first stage of results for the vinyl monomers of the second stage in the absence of the vinyl polymer obtained in the first stage.
Patent CA-2100831-A1 (CA)
Inventor: CHANDLEY GEORGE D
IPC: B22D18/06
Filed: 1993-07-19
Abstract: Apparatus and method for countergravity casting a melt employs a particulate mass disposed in a container about a mold having a mold cavity, an ingate passage communicated to the mold cavity for supplying the melt to the mold cavity, and a separate, preformed riser forming member connected to the mold so as to communicate to an isolated and/or enlarged region of the mold cavity needing additional melt supply during solidification in the mold. The mold ingate passage and a source of the melt are communicated to conduct the melt through the ingate passage to the mold cavity to fill the mold cavity with the melt and form a riser of melt in the particulate mass. The riser of melt provides a source of additional melt for supply, as necessary, to the isolated and/or enlarged region during solidification of the melt in the mold cavity to accommodate melt shrinkage thereat.
Patent CA-2102899-A1 (CA)
Title: Ozone bleaching process
Inventor: HENRICSON KAJ
IPC: D21C9/10
Filed: 1992-06-25
Abstract: Method and apparatus for ozone bleaching a medium consistency cellulosic fiber suspension include feeding the fiber suspension and an ozone in carrier gas stream under pressure into a fluidizing mixer (14); intimately and uniformly mixing the fiber suspension with the ozone to achieve a bleaching reaction; passing the mixture into a first reaction vessel (22) to permit the bleaching reaction to proceed and to consume a major part of the ozone; adding a second bleaching chemical to the mixture;  separating the excess ozone and carrier gas from the mixture in a second considerably larger vessel (32) and removing the fiber suspension from the second vessel after the effective second bleaching reaction.
Patent CA-2103469-A1 (CA)
Title: Cardiovascular flow enhancer and method of operation
Inventor: MOULDER PETER V
IPC: A61M60/411
Filed: 1993-11-18
Abstract: CARDIOVASCULAR FLOW ENHANCER    AND METHOD OF OPERATION                   Abstract of the Disclosure An implanted cardiovascular assist pump is connected with the proximal descending thoracic aorta. The pump inlet is connected with the aorta at substantially the site of the first pressure/flow node from the heart. The pump outlet is connected at substantially the site of the last pressure/flow antinode before the heart. Control of pump speed varies blood flow through the pump. As a fail-safe mechanism, a pump shunt flow path is provided, through one of a variety of disclosed structures.
Patent CA-2106590-A1 (CA)
Title: Control of oxygen level in feed for improved aromatics/non-aromatics pervaporation
Inventor: FEIMER JOSEPH L
IPC: C07C9/14
Filed: 1992-04-02
Abstract: The separation of aromatic hydrocarbons from mixtures of aromatic and non-aromatic hydrocarbon feeds under pervaporation conditions, is improved by the control of the amount of oxygen present in the feed. The amount of oxygen in the feed, such as heavy cat naphtha or other cracked feed, should be less than 30 wppm, preferably less than 10 wppm. The oxygen level in the feed can be controlled by the addition of small amount of oxygen scavenger into the feed. Hindered phenols are representative of useful oxygen scavengers.
Patent CA-2107106-A1 (CA)
Title: Cross-linking agent
Inventor: KLAVENESS JO
IPC: A61K49/22
Filed: 1992-03-28
Abstract: Cross-linking agents containing or adapted to generate methylene diester or diamide groups of formula -(Z)m.Y.X.C(R1R2).X.Y.(Z)n- (where each X and Z is selected from -O-, -S- and -NR- (where R is hydrogen or an organic group); each Y is carbonyl, thiocarbonyl, sulphonyl, phosphoryl or a similar acid-forming group;  m and n are each zero or 1; and R1 and R2 are each hydrogen, an organic group or a group -X.Y(Z)m-, or together form a divalent organic group) are useful in the preparation of substrates containing biodegradable cross-linking groups.
Patent CA-2111094-A1 (CA)
Title: Method and Apparatus for the Measurement of Atrial Pressure
Inventor: HICKEY DONALD D
IPC: A61B5/03
Filed: 1991-06-24
Abstract: A non-invasive apparatus for obtaining a quantitative determination of mean left atrial pressure comprises a balloon (24) to be inserted by means of a catheter (20) into the esophagus (26) and positioned adjacent the left atrium.  As the balloon is gradually inflated, a tracing of mean balloon pressure is obtained. In addition, a tracing of balloon pressure on a steady baseline and with low frequency oscillations due to respiration filtered out is obtained whereby the tracing represents balloon pressure oscillations effected by left atrial pressure. In accordance with the oscillometric principle the mean balloon pressure is measured at the time when the amplitude of the balloon pressure oscillations effected by the left atrial pressure is at a peak. This mean balloon pressure is indicative of approximate mean left atrial pressure. Mean left atrial transmural pressure may be determined by subtracting therefrom the mean esophageal pressure as measured at a position in the esophagus where it is unaffected by the heart.